golden hour

/home/doctorbruno/.trash/google-site-kit.1/third-party/paragonie/constant_time_encoding/src

File/Folder	Size	Actions
Base32.php	15.44 KB
Base32Hex.php	3.33 KB
Base64.php	11.81 KB
Base64DotSlash.php	2.96 KB
Base64DotSlashOrdered.php	2.73 KB
Base64UrlSafe.php	3.14 KB
Binary.php	2.88 KB
EncoderInterface.php	1.97 KB
Encoding.php	7.18 KB
Hex.php	5.16 KB
RFC4648.php	4.67 KB

Edit: Hex.php

<?php

declare (strict_types=1);
namespace Google\Site_Kit_Dependencies\ParagonIE\ConstantTime;

use RangeException;
use SensitiveParameter;
use SodiumException;
use TypeError;
use function extension_loaded;
use function pack;
use function sodium_bin2hex;
use function sodium_hex2bin;
use function unpack;
/**
 *  Copyright (c) 2016 - 2022 Paragon Initiative Enterprises.
 *  Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 *  SOFTWARE.
 */
/**
 * Class Hex
 * @package ParagonIE\ConstantTime
 */
abstract class Hex implements EncoderInterface
{
    /**
     * Convert a binary string into a hexadecimal string without cache-timing
     * leaks
     *
     * @param string $binString (raw binary)
     * @return string
     * @throws TypeError
     */
    public static function encode(
        #[SensitiveParameter]
        string $binString
    ): string
    {
        if (extension_loaded('sodium')) {
            try {
                return sodium_bin2hex($binString);
            } catch (SodiumException $ex) {
                throw new RangeException($ex->getMessage(), $ex->getCode(), $ex);
            }
        }
        $hex = '';
        $len = Binary::safeStrlen($binString);
        for ($i = 0; $i < $len; ++$i) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C', $binString[$i]);
            $c = $chunk[1] & 0xf;
            $b = $chunk[1] >> 4;
            $hex .= pack('CC', 87 + $b + ($b - 10 >> 8 & ~38), 87 + $c + ($c - 10 >> 8 & ~38));
        }
        return $hex;
    }
    /**
     * Convert a binary string into a hexadecimal string without cache-timing
     * leaks, returning uppercase letters (as per RFC 4648)
     *
     * @param string $binString (raw binary)
     * @return string
     * @throws TypeError
     */
    public static function encodeUpper(
        #[SensitiveParameter]
        string $binString
    ): string
    {
        $hex = '';
        $len = Binary::safeStrlen($binString);
        for ($i = 0; $i < $len; ++$i) {
            /** @var array<int, int> $chunk */
            $chunk = unpack('C', $binString[$i]);
            $c = $chunk[1] & 0xf;
            $b = $chunk[1] >> 4;
            $hex .= pack('CC', 55 + $b + ($b - 10 >> 8 & ~6), 55 + $c + ($c - 10 >> 8 & ~6));
        }
        return $hex;
    }
    /**
     * Convert a hexadecimal string into a binary string without cache-timing
     * leaks
     *
     * @param string $encodedString
     * @param bool $strictPadding
     * @return string (raw binary)
     * @throws RangeException
     */
    public static function decode(
        #[SensitiveParameter]
        string $encodedString,
        bool $strictPadding = \false
    ): string
    {
        if (extension_loaded('sodium') && $strictPadding) {
            try {
                return sodium_hex2bin($encodedString);
            } catch (SodiumException $ex) {
                throw new RangeException($ex->getMessage(), $ex->getCode(), $ex);
            }
        }
        $hex_pos = 0;
        $bin = '';
        $c_acc = 0;
        $hex_len = Binary::safeStrlen($encodedString);
        $state = 0;
        if (($hex_len & 1) !== 0) {
            if ($strictPadding) {
                throw new RangeException('Expected an even number of hexadecimal characters');
            } else {
                $encodedString = '0' . $encodedString;
                ++$hex_len;
            }
        }
        /** @var array<int, int> $chunk */
        $chunk = unpack('C*', $encodedString);
        while ($hex_pos < $hex_len) {
            ++$hex_pos;
            $c = $chunk[$hex_pos];
            $c_num = $c ^ 48;
            $c_num0 = $c_num - 10 >> 8;
            $c_alpha = ($c & ~32) - 55;
            $c_alpha0 = ($c_alpha - 10 ^ $c_alpha - 16) >> 8;
            if (($c_num0 | $c_alpha0) === 0) {
                throw new RangeException('Expected hexadecimal character');
            }
            $c_val = $c_num0 & $c_num | $c_alpha & $c_alpha0;
            if ($state === 0) {
                $c_acc = $c_val * 16;
            } else {
                $bin .= pack('C', $c_acc | $c_val);
            }
            $state ^= 1;
        }
        return $bin;
    }
}